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京石高速公路改扩建段采用两侧拼宽方式将原有双向4车道改为双向8车道。原有公路建成较早,路(桥)面横坡采用值为1.5%,本文从多方面综合论证扩建后八车道路(桥)面横坡的取值,以求满足工程需要的最佳方案。
Beijing-Shijiazhuang Expressway expansion section using quads on both sides of the original bidirectional 4 lane to bidirectional 8 lane. The original highway was built earlier, the value of road (bridge) slope is 1.5%. This article comprehensively expounds the value of cross-slope of eight road (bridge) after expansion, in order to meet the project’s best plan .